#include <stdio.h>

int main()
{
    int i;
    float total = 0;
    for(i = 0; i < 5;i++)
    {
        total = (total + 1000.0)/(1+0.0063*12);

    }
    printf("He must save %.2f at first.\n",total);

    return 0;
}
//熊贤豪